After you stick your dildo in your ass, do not suck on it or put it in your pussy. There is shit or at least fecal residue in your ass (remember, shit comes out of your asshole), and you don't want to eat shit. Otherwise, you might as well pick up your poop from the toilet bowl and take a bite. And forget about wiping your ass because that's basically what you are doing when you rub that ass-plugged dildo all over your pussy, your mouth, and, god forbid, my mouth and ass.